Can anyone advise whether this breaks any law e.g. GDPR?
A manager receives an email which clearly states that the attached file will contain personal (medical) information information about an employee. The manager then opens the attachment with an employee (non-manager and not the one that the attached file is about) sat next to them, so that the employee can see exactly what is contained in that file. The manager comments on the contents and also tells the employee more details about the medical condition of the other employee.